Water-spraying device for pneumatic tools.



A. H.'TAYLOR. WATER SPRAYING DEVICE FOR PNEUMATIC TOOLS. APPLICATIONFILED FEB. 21, 1908.

905,387. 1 Y Patented Dec.1,1 90 8.

. Q f em 0 gs O I I R v n k x Id Wfizesses; fizveniar? W 0 w y v UNITEDSTATES PATENT OFFICE.

ALBERT H. TAYLOR, OF EASTON, PENNSYLVANIA, AS'SIGNO'R TO INGERSOLL-RANDCOM- PANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

WATER-SPRAYING DEVICE FOR PNEUMATIC TOOLS.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed February 21, 1908. Serial No. 416,972.

' To all whom it may concern:

Be it known that I, ALBERT H. TAYLOR, a citizen of the United States,and resident of Easton, in the county of Northampton and State ofPennsylvania, have invented a new and useful Improvement inWater-Spraying Devices for Pneumatic Tools, of which the following is aspecification.

My invention relates to a water spraying device for use in connectionwith pneumatic tools and it is directedmore particularly to a waterspraying device for use in connection with hammer .drills, where it isdesirable that the dust which is cut by the drill steel should be laidby coming in contact with the spray of Water, as the dust leaves thehole being bored.

In ordinary practice where air is used to clean the hole being bored,the dust is blown out of the hole and mixes with the atmosphere, thusrendering the air unfit for breathing and dangerous for the operator,especially so in closed workings, such as mines and tunnels.

The object of my invention is to provide an ejector which is connected.to a water supply and also to the air supply, whereby a et of airissuing from the force nozzle of the ejector will draw water from thewater supply and force it through the discharge nozzle of the ejector inthe form of a spray of water which may be directed against the mouth ofthe hole being bored, thus dampening the dust particles before they havetime to mix with the air and causing the particles to: be precipitated.

A practical embodiment of my invention is represented in theaccompanying drawings in which Figure 1 is a view in side elevation,par. tially in section, showing a hand pneumatic tool of,the hammerdrill type with my water end view of the rotating handle.

The water spraying device is herein shown as applied to a hammer drillof the well known axial valve type, the tool handle being denoted by 1;the cylinder or barrel, by 2; the drill Isteel, b 3; and the rotatinghandle, by 4, 5. T e air supply pipe' 6 leads tothe tool handle 1 fromany suitable source of supply, not shown herein.

A pipe 7 leads from a source of water supply, such, for instanc; -as atub or cask 8, to the outer end of the member 5 of the rotating handle,which member is hollow to provide a water supply chamber 9 therein.

The ejector, carried by the rotating handle, comprises a dischargenozzle 10 in communication with the water supply chamber 9, and a forcenozzle 11 in communication with the .air supply for the tool. In thepresent instance, a pipe 12 is provided which leads from the tool handle1 to the force nozzle 11 of the ejector, so that a jet of air may bedirected into the discharge nozzle 10 for lifting the water from itssourceof supply and forcing it through the discharge with the air supplypipe 6, through the main v air supply passage 13 in the tool handle. Acook 14 is provided in the pipe 12 for regulating .the admission. of airto the e ector.

In the form herein shown and described the arrangement of the ports issuch that when the cock 14 is open, the water may be sprayed on to thedesired spot whether the tool be operating or not.

While I have shown my invention in connection with a hammer drill, it isto be understood that I contemplate utilizing the same wherever it maybe desirable for use.

that I claim is:

l. A water spraying device for pneumatic tools, comprising a hollowrotating handle communicating with a water supply, and an ejectorcarried by the handle, for spraying water on to the desired spot, saidejector having its dischar e nozzle in communication with the interiorof the handle and its force nozzle in communication with the air with awater supply, an

supply, and means for regulating the admission of air to the forcenozzle of the ejector.

the tool handle to the force nozzle of the ejector.

4. Apneumatic tool comprislng a handle,

,an air supply pipe leading thereto, a cylinder, a hollow rotatinghandle, a water supply pipe leading thereto, an ejector carried.

by the rotating handle having its discharge nozzle arranged to spraywater on to the desired spot, a air pipe leading from the tool handle tothe force nozzle of the ejector, and a cock in said pipe for regulatingthe admission of air to said force nozzle.

5. A pneumatic tool comprising a handle having a main air supply passagetherein, an air supply pipe leading to said passage in the handle, acylinder, a hollow rotating handle, a water supply pipe leading thereto,an ejector carried by the rotating handle having its discharge nozzlearranged to spray the Water on to the desired spot and an air pipeleading from the air supply passage in the tool handle to the forcenozzle of the ejector,

6. A pneumatic tool comprising a handle having a main air supply passagetherein, an air supply pipe leading to said passage in the handle, acylinder, a hollow rotating handle, a Water supply pipe leading thereto,an ejector carried by the rotating handle having its discharge nozzlearranged to spray the Water on to the desired spot, an air pipe leadingfrom the: air supply passage in ALBERT I-I. TAYLOR Witnesses:

WARD RAYMOND, RUssELL H. WILHELM.

